feat(actions): autoclose workflow (#43644)

.github/workflows/autoclose.yml

@@ -0,0 +1,41 @@
+name: Autoclose
+on:
+  pull_request_target:
+    branches:
+      - "main"
+    paths:
+      - ".gitignore"
+
+jobs:
+  autoclose:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v5
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            const files = await github.rest.pulls.listFiles({
+              owner: context.payload.repository.owner.login,
+              repo: context.payload.repository.name,
+              pull_number: context.payload.pull_request.number,
+            });
+            if (
+              files.data.length === 1 &&
+              files.data[0].filename === ".gitignore" &&
+              files.data[0].patch ===
+                "@@ -63,7 +63,6 @@ $RECYCLE.BIN/\n # Icon must end with two \\r\n Icon\n \n-\n # Thumbnails\n ._*\n "
+            ) {
+              core.setFailed("Invalid PR detected.");
+              github.rest.issues.createComment({
+                issue_number: context.issue.number,
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                body: "Thank you for opening this pull request.\n\nThis is a standard message notifying you that we've reviewed your pull request and have decided not to merge it. We would welcome future pull requests from you.\n\nThank you and happy coding.",
+              });
+              await github.rest.pulls.update({
+                owner: context.payload.repository.owner.login,
+                repo: context.payload.repository.name,
+                pull_number: context.payload.pull_request.number,
+                state: "closed"
+              });
+            }